Keyboard Accessible Trial Version 1 - Dropdown top left

Using CSS1 and CSS2. This menu currently only works in Gecko 1.7, 1.8 & 1.9 and would you believe IE 5.5, IE 6 and IE 7. Currently working in roughly 95% of browsers according to the counter. The keyboard functionality does not work in Opera and browsers for Mac. Opera can be configured to show all links on a page. The Gecko browsers use :focus (pink background) and the Trident browsers use :active (blue background)

Update 30 Nov 2007: Works in Opera 9.50 (beta) using :focus. Works in Safari 3.0.4 (beta) using :focus but very buggy.